# \#namespace

**URL:** https://brian.discourse.group/tag/namespace/31.md

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## [Error encountered with object named ‘readout\_layer\_subexpression\_update’ when running network (with functions in different scripts)](https://brian.discourse.group/t/error-encountered-with-object-named-readout-layer-subexpression-update-when-running-network-with-functions-in-different-scripts/1496)

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**Author:** [@MisterOrbit](https://brian.discourse.group/u/MisterOrbit)\
**Replies:** 5\
**Last updated:** [24 September 2025 07:59 UTC](https://brian.discourse.group/t/error-encountered-with-object-named-readout-layer-subexpression-update-when-running-network-with-functions-in-different-scripts/1496 "2025-09-24T07:59:53Z")

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Description of problem I am running a custom brian2 network inside a genetic algorithm. It works when everything is in the same python script, but after refactoring to be across multiple modular scripts that import funct…

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## [Namespace Issues with PoissonGroup](https://brian.discourse.group/t/namespace-issues-with-poissongroup/1484)

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**Author:** [@flmuk](https://brian.discourse.group/u/flmuk)\
**Replies:** 3\
**Last updated:** [16 September 2025 14:38 UTC](https://brian.discourse.group/t/namespace-issues-with-poissongroup/1484 "2025-09-16T14:38:34Z")

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Problem I’m encountering a persistent KeyError when trying to use a state variable from one NeuronGroup to dynamically modulate the rates of a PoissonGroup. I’ve tried providing the necessary objects in the namespace bot…

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## [KeyError: 'The identifier "a" could not be resolved.' - Izhikevich Model](https://brian.discourse.group/t/keyerror-the-identifier-a-could-not-be-resolved-izhikevich-model/1109)

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**Author:** [@foneill](https://brian.discourse.group/u/foneill)\
**Replies:** 2\
**Last updated:** [9 January 2024 15:21 UTC](https://brian.discourse.group/t/keyerror-the-identifier-a-could-not-be-resolved-izhikevich-model/1109 "2024-01-09T15:21:06Z")

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Description of problem I am hoping to build a small-worlds network of Izhikevich neurons. I already have a function that defines a connectivity matrix and I have a separate function that creates the network. However, I …

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## [Network and Simulation Issues](https://brian.discourse.group/t/network-and-simulation-issues/878)

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**Author:** [@luol3](https://brian.discourse.group/u/luol3)\
**Replies:** 23\
**Last updated:** [26 January 2023 02:36 UTC](https://brian.discourse.group/t/network-and-simulation-issues/878 "2023-01-26T02:36:57Z")

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Description of problem I am trying to simulate the model from Klaus Wimmer’s 2015 paper (Dynamics of sensory integration in a hierarchical network explains choice probabilities in cortical area MT) in Brian2. The model s…